{"id":105064,"date":"2022-09-11T03:36:39","date_gmt":"2022-09-11T01:36:39","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/opublikovan-svobodnyj-zvukovoj-kodek-flac-1-4"},"modified":"2022-09-11T03:36:39","modified_gmt":"2022-09-11T01:36:39","slug":"opublikovan-svobodnyj-zvukovoj-kodek-flac-1-4","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/opublikovan-svobodnyj-zvukovoj-kodek-flac-1-4","title":{"rendered":"Den frie lydkodek FLAC 1.4 er offentliggjort","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Efter ni \u00e5rs offentligg\u00f8relse af den tidligere betydningsfulde version pr\u00e6senterede Xiph.Org-f\u00e6llesskabet en ny version af den frie codec FLAC 1.4.0, som muligg\u00f8r tabsl\u00f8s lydkodning. FLAC anvender udelukkende metoder til tabsl\u00f8s kodning, hvilket sikrer, at den oprindelige lydstr\u00f8ms kvalitet bevares fuldt ud og er identisk med den referenceversion, der er blevet kodet. De tabsl\u00f8se kompressionsmetoder, der anvendes, muligg\u00f8r en reduktion af st\u00f8rrelsen p\u00e5 den oprindelige lydstr\u00f8m med 50-60 %. FLAC er et helt frit streamingformat, hvilket indeb\u00e6rer ikke kun \u00e5benhed af biblioteker med implementering af kodnings- og afkodningsfunktioner, men ogs\u00e5 frav\u00e6r af begr\u00e6nsninger vedr\u00f8rende brug af specifikationer og skabelse af afledte varianter. Koden til bibliotekerne distribueres under BSD-licensen.    <\/p>\n<p>Blandt de vigtigste \u00e6ndringer kan n\u00e6vnes:  <\/p>\n<ul>\n<li class=\"l\">  Tilf\u00f8jet underst\u00f8ttelse af kodning og afkodning med en kvantisering p\u00e5 32 bit pr. pr\u00f8ve.\n<li class=\"l\"> Effektiviteten af kompression er forbedret p\u00e5 niveauerne 3 til 8, p\u00e5 bekostning af en lille s\u00e6nkning af kodningshastigheden p\u00e5 grund af den \u00f8gede pr\u00e6cision ved beregning af autotcorrelation. Kodningshastigheden er \u00f8get for niveauerne 0, 1 og 2. Kompressionen p\u00e5 niveauerne 1 til 4 er lidt forbedret ved \u00e6ndringen af den adaptive heuristik.\n<li class=\"l\"> Kodningshastigheden er markant forbedret p\u00e5 64-bit ARMv8-processorer takket v\u00e6re brugen af NEON-instruktioner. Ydeevnen er forbedret p\u00e5 x86_64-processorer, der underst\u00f8tter FMA-instruktionss\u00e6ttet.\n<li class=\"l\"> API og ABI for bibliotekerne libFLAC og libFLAC++ er \u00e6ndret (ved opdatering til version 1.4 kr\u00e6ver det, at applikationer genopbygges).\n<li class=\"l\"> Plug-in til XMMS er blevet erkl\u00e6ret for\u00e6ldet og vil blive fjernet i den n\u00e6ste version.\n<li class=\"l\"> I biblioteket libFLAC og v\u00e6rkt\u00f8jet flac er det nu muligt at begr\u00e6nse den minimale bitrate for FLAC-filer ned til 1 bitrate pr. pr\u00f8ve (kan v\u00e6re nyttigt ved live-udsendelse).\n<li class=\"l\"> Det er nu muligt at kodning af filer med en samplingsfrekvens p\u00e5 op til 1048575 Hz.\n<li class=\"l\"> I flac-v\u00e6rkt\u00f8jet er der implementeret nye muligheder &#171;&#8212;limit-min-bitrate&#187; og  &#171;&#8212;keep-foreign-metadata-if-present&#187;.     <\/ul>\n<p>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57761\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0421\u043f\u0443\u0441\u0442\u044f \u0434\u0435\u0432\u044f\u0442\u044c \u043b\u0435\u0442 \u0441 \u043c\u043e\u043c\u0435\u043d\u0442\u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u0438 \u043f\u0440\u043e\u0448\u043b\u043e\u0439 \u0437\u043d\u0430\u0447\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0439 \u0432\u0435\u0442\u043a\u0438 \u0441\u043e\u043e\u0431\u0449\u0435\u0441\u0442\u0432\u043e Xiph.Org \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u043e \u043d\u043e\u0432\u0443\u044e \u0432\u0435\u0440\u0441\u0438\u044e \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u043a\u043e\u0434\u0435\u043a\u0430 FLAC 1.4.0, \u043e\u0431\u0435\u0441\u043f\u0435\u0447\u0438\u0432\u0430\u044e\u0449\u0435\u0433\u043e \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u0437\u0432\u0443\u043a\u0430 \u0431\u0435\u0437 \u043f\u043e\u0442\u0435\u0440\u0438 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430. FLAC \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 \u0442\u043e\u043b\u044c\u043a\u043e \u043c\u0435\u0442\u043e\u0434\u044b \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044f \u0431\u0435\u0437 \u043e\u0442\u0431\u0440\u0430\u0441\u044b\u0432\u0430\u043d\u0438\u044f \u0434\u0430\u043d\u043d\u044b\u0445 (lossless), \u0447\u0442\u043e \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u0435\u0442 \u043f\u043e\u043b\u043d\u0443\u044e \u0441\u043e\u0445\u0440\u0430\u043d\u043d\u043e\u0441\u0442\u044c \u0438\u0437\u043d\u0430\u0447\u0430\u043b\u044c\u043d\u043e\u0433\u043e \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0430 \u0437\u0432\u0443\u043a\u043e\u0432\u043e\u0433\u043e \u043f\u043e\u0442\u043e\u043a\u0430 \u0438 \u0435\u0433\u043e \u0438\u0434\u0435\u043d\u0442\u0438\u0447\u043d\u043e\u0441\u0442\u044c \u0441 \u044d\u0442\u0430\u043b\u043e\u043d\u043d\u044b\u043c \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u043e\u043c, \u043f\u043e\u0434\u0432\u0435\u0440\u0433\u043d\u0443\u0442\u044b\u043c \u043a\u043e\u0434\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044e. \u041f\u0440\u0438 \u044d\u0442\u043e\u043c \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u043c\u044b\u0435 \u043c\u0435\u0442\u043e\u0434\u044b \u0441\u0436\u0430\u0442\u0438\u044f \u0431\u0435\u0437 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-105064","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0421\u043f\u0443\u0441\u0442\u044f \u0434\u0435\u0432\u044f\u0442\u044c \u043b\u0435\u0442 \u0441 \u043c\u043e\u043c\u0435\u043d\u0442\u0430 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